libclc: Fix building against an llvm build directory
Reviewed By: thieta
Differential Revision: https://reviews.llvm.org/D142718
GitOrigin-RevId: 8040e3a4deeb25edc34fb4f89e032ff58ad50572
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0e21a86..f712100 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -105,7 +105,10 @@
enable_language( CLC LLAsm )
# This needs to be set before any target that needs it
-include_directories( ${LLVM_INCLUDE_DIR} )
+# We need to use LLVM_INCLUDE_DIRS here, because if we are linking to an
+# llvm build directory, this includes $src/llvm/include which is where all the
+# headers are not $build/include/ which is what LLVM_INCLUDE_DIR is set to.
+include_directories( ${LLVM_INCLUDE_DIRS} )
# Setup prepare_builtins tools
set(LLVM_LINK_COMPONENTS
